Plastic bags

I don't know how it is with you, but I am against waste. Waste of food, waste of energy, waste of money, waste of just about everything. Therefore I always re-use paper and plastic bags. Paper bags until they fall apart, and plastic bags in a drawer. You know the bottom drawer, that is usually bigger than the other ones. This has resulted in a overflow of plastic bags. Cannot even close the drawer anymore. Bags that I will never need. Been the same in every place I have ever moved from. I have been forced to throw all bags away. Now I have started to do it all by myself. Throw them away. It is useless with all these bags. What am I ever gonna use them for? Can't use them for trash, since Zürisäcke is all they take here. I know it's not good for the environment, so all I can do is to say no thank you when somebody wants to give me one. Most of the time I carry around an empty bag so not a problem. But still, where do all plastic bags come from?